National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Mostly Cloudy and Breezy

50°F

10°C

Humidity 89%
Wind Speed SW 21 G 32 mph
Barometer 29.90 in (1012.4 mb)
Dewpoint 47°F (8°C)
Visibility 8.00 mi
Wind Chill43°F (6°C)
Last update 1 Apr 1:56 am EDT
Extended Forecast for

South Dennis MA

  • Overnight

    Overnight: Patchy fog before 5am. Otherwise, mostly cloudy, with a low around 45. Southwest wind 11 to 13 mph, with gusts as high as 28 mph.

    Low: 45 °F

    Patchy Fog

  • Wednesday

    Wednesday: Showers likely, mainly after 4pm. Patchy fog before 11am, then patchy fog after 5pm. Otherwise, mostly cloudy, with a high near 54. Southwest wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Showers. Patchy fog after 7pm. Low around 38. Northeast wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers likely, mainly before noon. Patchy fog. Otherwise, cloudy, with a high near 42. Northeast wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 42 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday Night

    Thursday Night: A slight chance of showers before 2am. Patchy fog before 9pm. Otherwise, cloudy, with a low around 37. East wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Cloudy, with a high near 52. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 52 °F

    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. Southwest wind around 10 mph, with gusts as high as 23 mph.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 54. West wind 6 to 8 mph becoming east in the afternoon.

    High: 54 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39. East wind around 7 mph becoming south after midnight.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog before 5am. Otherwise, mostly cloudy, with a low around 45. Southwest wind 11 to 13 mph, with gusts as high as 28 mph.
Wednesday
Showers likely, mainly after 4pm. Patchy fog before 11am, then patchy fog after 5pm. Otherwise, mostly cloudy, with a high near 54. Southwest wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers. Patchy fog after 7pm. Low around 38. Northeast wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely, mainly before noon. Patchy fog. Otherwise, cloudy, with a high near 42. Northeast wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A slight chance of showers before 2am. Patchy fog before 9pm. Otherwise, cloudy, with a low around 37. East wind 3 to 7 mph. Chance of precipitation is 20%.
Friday
Cloudy, with a high near 52. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 44. Southwest wind around 10 mph, with gusts as high as 23 mph.
Saturday
Partly sunny, with a high near 54. West wind 6 to 8 mph becoming east in the afternoon.
Saturday Night
Mostly cloudy, with a low around 39. East wind around 7 mph becoming south after midnight.
Sunday
A chance of showers after noon. Mostly cloudy, with a high near 55. South wind 9 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 39. Southwest wind 7 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Monday
A chance of showers. Mostly sunny, with a high near 49. Northwest wind around 7 mph. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 35. Northwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 45. North wind 5 to 7 mph becoming east in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
12:19 am EDT Apr 1, 2026
Forecast Valid:
2am EDT Apr 1, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation